JEE Main levelSingle correct optionDifficulty 2 of 3o2183
Hex-1-yne is treated with disiamylborane and then with HX2OX2/NaOH. The major product is
Ahexanal
Bhexan-2-ol
Chexan-2-one
Dhexan-1-ol
Answer: A
Boron adds to the terminal carbon of the alkyne, giving a vinylborane. Oxidation gives the enol CX4HX9CH=CHOH, which tautomerises to the aldehyde hexanal.